El James Webb descubre una supertierra con atmósfera y un océano de magma, con una temperatura en su lado diurno de 1.800 ºC y que está desafiando todo lo que creíamos saber sobre los planetas rocosos: así es el exoplaneta TOI-561 b www.20minutos.es/ciencia/desc...
Descubren una supertierra con atmósfera y océano de magma gracias al telescopio James Webb: así es el exoplaneta TOI-561 b
Este exoplaneta gira en 11 horas y podría tener una atmósfera contra todo pronóstico.
www.20minutos.es
December 14, 2025 at 10:25 AM
El James Webb descubre una supertierra con atmósfera y un océano de magma, con una temperatura en su lado diurno de 1.800 ºC y que está desafiando todo lo que creíamos saber sobre los planetas rocosos: así es el exoplaneta TOI-561 b www.20minutos.es/ciencia/desc...
Hot, small and old—exoplanet TOI-561 b is just about the worst place to look for alien air. Scientists using JWST found it there anyway
This Fiery Exoplanet Shouldn’t Have an Atmosphere—But It Does
Hot, small and old—exoplanet TOI-561 b is just about the worst place to look for alien air. Scientists using JWST found it there anyway
www.scientificamerican.com
September 23, 2025 at 1:08 PM
Hot, small and old—exoplanet TOI-561 b is just about the worst place to look for alien air. Scientists using JWST found it there anyway
A hellish world: Planet TOI-561 b, slightly larger than Earth, orbits an ancient, sunlike star so closely that a "year" lasts just 11 hours and its surface is lava. Yet somehow it has a thick atmosphere, hinting at how old, battered planets might rejuvenate themselves. 🧪🔭
eos.org/articles/a-l...
eos.org/articles/a-l...
January 11, 2026 at 12:43 AM
A hellish world: Planet TOI-561 b, slightly larger than Earth, orbits an ancient, sunlike star so closely that a "year" lasts just 11 hours and its surface is lava. Yet somehow it has a thick atmosphere, hinting at how old, battered planets might rejuvenate themselves. 🧪🔭
eos.org/articles/a-l...
eos.org/articles/a-l...
TOI-561 b est, en théorie, la pire exoplanète sur laquelle chercher une atmosphère : collée à son étoile, trop chaude, trop petite et trop vieille...
Mais il semblerait qu'on ait oublié de le lui dire, parce que, contre toute attente, le télescope James Webb en a trouvé une.
shorturl.at/oo6Lv
Mais il semblerait qu'on ait oublié de le lui dire, parce que, contre toute attente, le télescope James Webb en a trouvé une.
shorturl.at/oo6Lv
This Fiery Exoplanet Shouldn’t Have an Atmosphere—But It Does
Hot, small and old—exoplanet TOI-561 b is just about the worst place to look for alien air. Scientists using JWST found it there anyway
shorturl.at
September 23, 2025 at 2:02 PM
TOI-561 b est, en théorie, la pire exoplanète sur laquelle chercher une atmosphère : collée à son étoile, trop chaude, trop petite et trop vieille...
Mais il semblerait qu'on ait oublié de le lui dire, parce que, contre toute attente, le télescope James Webb en a trouvé une.
shorturl.at/oo6Lv
Mais il semblerait qu'on ait oublié de le lui dire, parce que, contre toute attente, le télescope James Webb en a trouvé une.
shorturl.at/oo6Lv
This is such a cool result!
TOI-561 b is basically the worst possible place to go looking for an atmosphere: too hot, too small, and too old.
But it looks like someone forgot to tell the planet that. Because it has air, anyways 🧪🔭
Me for @sciam.bsky.social:
TOI-561 b is basically the worst possible place to go looking for an atmosphere: too hot, too small, and too old.
But it looks like someone forgot to tell the planet that. Because it has air, anyways 🧪🔭
Me for @sciam.bsky.social:
September 23, 2025 at 11:44 AM
This is such a cool result!
TOI-561 b is basically the worst possible place to go looking for an atmosphere: too hot, too small, and too old.
But it looks like someone forgot to tell the planet that. Because it has air, anyways 🧪🔭
Me for @sciam.bsky.social:
TOI-561 b is basically the worst possible place to go looking for an atmosphere: too hot, too small, and too old.
But it looks like someone forgot to tell the planet that. Because it has air, anyways 🧪🔭
Me for @sciam.bsky.social:
The JWST campaign on TOI-561 b, led by @johannateske.bsky.social, continues to deliver surprises! Samuel Boucher (supervised by @astrolisadang.bsky.social) just posted a new phase curve study on this lava world.
August 28, 2026 at 6:21 AM
The JWST campaign on TOI-561 b, led by @johannateske.bsky.social, continues to deliver surprises! Samuel Boucher (supervised by @astrolisadang.bsky.social) just posted a new phase curve study on this lava world.
Despite being blasted by radiation to the point that its rocky surface is likely molten, TOI-561 b still seems to retain a thick atmosphere.
A “Lava World” Unexpectedly Hosts an Atmosphere - Eos
TOI-561 b, an exoplanet roughly 275 light-years away, seems to have a thick atmosphere despite being wildly irradiated by its host star.
eos.org
January 10, 2026 at 7:42 PM
Despite being blasted by radiation to the point that its rocky surface is likely molten, TOI-561 b still seems to retain a thick atmosphere.
Eine Lavahölle schlimmer als die Venus.Der Exoplanet TOI-561 b entpuppt sich als Höllenwelt mit Temperaturen um die 1800 Grad Celsius. Dagegen wirkt selbst die Venus angenehm kühl.
December 16, 2025 at 4:31 AM
Eine Lavahölle schlimmer als die Venus.Der Exoplanet TOI-561 b entpuppt sich als Höllenwelt mit Temperaturen um die 1800 Grad Celsius. Dagegen wirkt selbst die Venus angenehm kühl.
“It’s super old and ultrahot. It’s the worst conditions. This should not have an atmosphere. And it has one.”
This Fiery Exoplanet Shouldn’t Have an Atmosphere—But It Does
Hot, small and old—exoplanet TOI-561 b is just about the worst place to look for alien air. Scientists using JWST found it there anyway
www.scientificamerican.com
September 23, 2025 at 3:30 PM
“It’s super old and ultrahot. It’s the worst conditions. This should not have an atmosphere. And it has one.”
Recent exoplanet press releases just haven't had the amazing art we're used to seeing and using on @cosmoquest.org's Escape Velocity Space News show.
Lacking in art I like for lava world TOI-561, I made my own. Learn how in this free Patreon post.
www.patreon.com/posts/starst...
Lacking in art I like for lava world TOI-561, I made my own. Learn how in this free Patreon post.
www.patreon.com/posts/starst...
StarStryder x CosmoQuestX: TOI-561 | StarStryder
Get more from StarStryder on Patreon
www.patreon.com
December 20, 2025 at 7:23 PM
Recent exoplanet press releases just haven't had the amazing art we're used to seeing and using on @cosmoquest.org's Escape Velocity Space News show.
Lacking in art I like for lava world TOI-561, I made my own. Learn how in this free Patreon post.
www.patreon.com/posts/starst...
Lacking in art I like for lava world TOI-561, I made my own. Learn how in this free Patreon post.
www.patreon.com/posts/starst...
Despite being blasted by radiation to the point that its rocky surface is likely molten, TOI-561 b still seems to retain a thick atmosphere. 🔭🧪
eos.org/articles/a-l...
eos.org/articles/a-l...
A “Lava World” Unexpectedly Hosts an Atmosphere - Eos
TOI-561 b, an exoplanet roughly 275 light-years away, seems to have a thick atmosphere despite being wildly irradiated by its host star.
eos.org
January 7, 2026 at 2:24 PM
Despite being blasted by radiation to the point that its rocky surface is likely molten, TOI-561 b still seems to retain a thick atmosphere. 🔭🧪
eos.org/articles/a-l...
eos.org/articles/a-l...
James Webb Space Telescope Finds Atmosphere on Lava Planet TOI-561 b www.scientificamerican.com/article/jame...
This Fiery Exoplanet Shouldn’t Have an Atmosphere—But It Does
Hot, small and old—exoplanet TOI-561 b is just about the worst place to look for alien air. Scientists using JWST found it there anyway
www.scientificamerican.com
September 23, 2025 at 1:51 PM
James Webb Space Telescope Finds Atmosphere on Lava Planet TOI-561 b www.scientificamerican.com/article/jame...
@johannateske.bsky.social's #RockyWorlds4 talk on TOI-561 b just reinforces my feeling that this weird little planet is one to keep an eye on.
It's among a handful of hot rocks challenging what we think we know about which planets have air.
I wrote about this last year for @sciam.bsky.social:
It's among a handful of hot rocks challenging what we think we know about which planets have air.
I wrote about this last year for @sciam.bsky.social:
This Fiery Exoplanet Shouldn’t Have an Atmosphere—But It Does
Hot, small and old—exoplanet TOI-561 b is just about the worst place to look for alien air. Scientists using JWST found it there anyway
www.scientificamerican.com
January 19, 2026 at 1:51 PM
@johannateske.bsky.social's #RockyWorlds4 talk on TOI-561 b just reinforces my feeling that this weird little planet is one to keep an eye on.
It's among a handful of hot rocks challenging what we think we know about which planets have air.
I wrote about this last year for @sciam.bsky.social:
It's among a handful of hot rocks challenging what we think we know about which planets have air.
I wrote about this last year for @sciam.bsky.social:
A super-hot planet that orbits its star closely has somehow managed to retain a thick atmosphere — even as the star’s radiation blasts it
go.nature.com/459CDvf
go.nature.com/459CDvf
Oddly cool super-hot planet has an atmosphere it shouldn’t
It’s a mystery why TOI-561 b’s blanket of gases hasn’t boiled off.
go.nature.com
December 19, 2025 at 2:41 PM
A super-hot planet that orbits its star closely has somehow managed to retain a thick atmosphere — even as the star’s radiation blasts it
go.nature.com/459CDvf
go.nature.com/459CDvf
Despite its floor likely being lava, TOI-561 b still seems to retain a thick atmosphere.
A “Lava World” Unexpectedly Hosts an Atmosphere - Eos
TOI-561 b, an exoplanet roughly 275 light-years away, seems to have a thick atmosphere despite being wildly irradiated by its host star.
eos.org
January 8, 2026 at 4:40 PM
Despite its floor likely being lava, TOI-561 b still seems to retain a thick atmosphere.
Pleased to report the first paper from our JWST project on the ultra-short-period planet TOI 561b, led by Joanna Teske. This first paper is on the dayside emission. arxiv.org/abs/2509.17231 TOI 561 b is an underdense planet relative to rock/iron composition, so while it could be rocky if it got
A Thick Volatile Atmosphere on the Ultra-Hot Super-Earth TOI-561 b
Ultra-short period (USP) exoplanets -- with $R_p \leq 2~$R$_{\oplus}$ and periods $\leq$1 day -- are expected to be stripped of volatile atmospheres by intense host star irradiation, which is corrobor...
arxiv.org
September 25, 2025 at 1:57 PM
Pleased to report the first paper from our JWST project on the ultra-short-period planet TOI 561b, led by Joanna Teske. This first paper is on the dayside emission. arxiv.org/abs/2509.17231 TOI 561 b is an underdense planet relative to rock/iron composition, so while it could be rocky if it got
Super-Earth Exoplanet TOI-561 b (Artist's Concept)
Super-Earth Exoplanet TOI-561 b (Artist's Concept)
www.flickr.com
December 15, 2025 at 9:42 PM
Super-Earth Exoplanet TOI-561 b (Artist's Concept)
Super-Earth Exoplanet TOI-561 b (NIRSpec Emission Spectrum)
Super-Earth Exoplanet TOI-561 b (NIRSpec Emission Spectrum)
www.flickr.com
December 15, 2025 at 9:41 PM
Super-Earth Exoplanet TOI-561 b (NIRSpec Emission Spectrum)